Presumably the CPA's advice on taxation of each entity is based on consistent tax treatment were the entities members of this new LLC.That is, if the taxable LLC receives a K-1 from "new" LLC in which business income is reported, the same should apply for the IRA. 

The treatments can help keep roots out of a pipe, but if they are already in and clogging the pipe, the only way to remove them is to snake with a root cutting auger.

I am wondering the type of tax treatment for vacation rentals such air bnb, vrbo etc.

This generally does not make a lot of sense to do.Bottom line is that a SDIRA works exactly like any other IRA when it comes to tax treatment, timelines, etc.  

Roads cost $, waste water treatment cost's $, drinking water, parks, sidewalks, street lights/signs, on and on the list is VERY long of the services NEEDED to support population and, at BIG population, those expenses get BIG. 

I also would make sure the doctor/psychologist puts something in writing stating "(1) Pit Bull" is required for treatment. 

Yes if he would be involved in the management in the LLC, then I agree with your treatment.

., and I are pointing to is the income tax treatment treatment of contributing potentially appreciated property (in relation to adjusted tax basis) to an S Corp. 

@Andrew S.You should work with your CPA/EA on treatment of this sale.Generally a sale materially below FMV to a family member or friend would be considered part sale and part gift. 

What is the tax treatment for the different income streams from Lease Options?